Capacitive Sensor

1. A touch sensor comprising: substrate having a sensing area and a first, second and third conductive element, wherein each of the first, second and third conductive element is either a sense line or a drive line; the first and the second conductive elements disposed on the substrate such that at least a portion of each of the first and the second conductive elements are within the sensing area, and being arranged such that for any two given points on the first conductive element within the sensing area, the nearest point to each on the second conductive element within the sensing area is a different distance away; the third conductive element being disposed on the substrate such that at least a portion of the third conductive element is within the sensing area, and being arranged such that the third conductive element crosses the second conductive element, and is conductively isolated therefrom; the first and the third conductive elements being arranged such that for any two given points on the first conductive element within the sensing area, the nearest point to each on the third conductive element within the sensing area is a different distance away.

2. The touch sensor claimed in claim 1 , wherein the substrate has a first edge, and the first, second and third conductive elements are electrically accessible on the first edge.

3. The touch sensor claimed in claim 1 , wherein the first, second and third conductive elements are all electrically accessible within 120 degrees of the sensing area as measured from a centroid of the sensing area of the substrate.

4. The touch sensor claimed in claim 1 , wherein the first, second and third conductive elements are all electrically accessible within 45 degrees of the sensing area as measured from a centroid of the sensing area of the substrate.

5. The touch sensor claimed in claim 1 , wherein the first conductive element is a drive line, and the second and third conductive elements are sense lines.

6. The touch sensor claimed in claim 1 , wherein the first conductive element is a sense line, and the second and third conductive elements are drive lines.

7. A touch sensor comprising: substrate having a sensing area and a first, second and third conductive element; the first and the second conductive elements disposed on the substrate such that at least a portion of each of the first and the second conductive elements are within the sensing area, and being arranged such that for any two given points on the first conductive element within the sensing area, the nearest point to each on the second conductive element within the sensing area is a different distance away; the third conductive element being disposed on the substrate such that at least a portion of the third conductive element is within the sensing area, and being arranged such that the third conductive element crosses the second conductive element, and is conductively isolated therefrom; the first and the third conductive elements being arranged such that for any two given points on the first conductive element within the sensing area, the nearest point to each on the third conductive element within the sensing area is a different distance away; further comprising a fourth conductive element disposed on the substrate at least partially within the sensing area, the fourth conductive element being conductively isolated from each of the first, second and third conductive elements, and arranged such that: for any two given points on the fourth conductive element within the sensing area, the nearest point to each on the second conductive element within the sensing area is a different distance away, and for any two given points on the fourth conductive element within the sensing area, the nearest point to each on the third conductive element within the sensing area is a different distance away.

8. A touch sensor comprising: substrate having a sensing area and a first, second and third conductive element; the first and the second conductive elements disposed on the substrate such that at least a portion of each of the first and the second conductive elements are within the sensing area, and being arranged such that for any two given points on the first conductive element within the sensing area, the nearest point to each on the second conductive element within the sensing area is a different distance away; the third conductive element being disposed on the substrate such that at least a portion of the third conductive element is within the sensing area, and being arranged such that the third conductive element crosses the second conductive element, and is conductively isolated therefrom; the first and the third conductive elements being arranged such that for any two given points on the first conductive element within the sensing area, the nearest point to each on the third conductive element within the sensing area is a different distance away; further comprising drive circuitry operatively connected to the second and third conductive elements; sense circuitry operatively connected to the first and fourth conductive elements; signal processor configured to: determine a first touch delta between the first and second conductive elements; determine a second touch delta between the first and third conductive elements; determine a third touch delta between the second and fourth conductive elements; determine a fourth touch delta between the third and fourth conductive elements; and determine a location of a touch on the touch sensor based upon the first, second, third and fourth touch deltas.